ortolon



Feb. 3, 1931. A. P. ORTOLON TOOL Filed Feb. 20, 1928 Patented Feb. 3,1931 UNITED STATES ARTHUR P. ORTOLON, or COTTONQIVALLEY! LonIsrANAf l:1;

qi ri Application filed February Serial lifoili55 78l. I I Q i v I Thisinvention relates to well tools or wrenches, and more particularly to atool especially designed for use in removing sections of oil wellcasings. V

The primary object ofthe inventionis to provide a toolof this characterwhich may be lowered into a section of a well casing and operated tosecurely grip the section and rotate the section disconnecting it fromits ad- 1 jacent section so that it may be readilyv and easily liftedfrom the well.

Another important object of the invention is to provide a tool of thischaracter which may be operated to rotate the section of the well casing,to be removed, in a right hand direction or a left hand directionaccording to the type of threads formed on the section to be removed;

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in ,the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention hereinafter described and claimed, may bemade within the scope of what is claimed, without departing from thespirit of the invention.

Referring to the drawing: 7

Figure 1 is a plan View of a tool constructed in accordance with theinvention.

Figure 2 is a vertical sectional view through a section of a wellcasing, thebody portion of the tool being shown in section, one of thestops being cut away.

Figure 3 is a sectional View taken on line 3--3 of Figure 2.

Figure 4 is a transverse sectional view through the device illustratingthe jaws of the tool reversed for a left hand operation.

Referring to the drawing in detail, the tool includes a body portion 5formed with a circular bore disposed through the central portionthereof, there being provided an inwardly disposed flange 6 at the'baseof the bore and forming a part of the body portion.

The body portion 5 is formed with lateral cut out portions 7 providedwith reduced portions 8 that extend to the central bore of the portion,the out'portions being '"de- I i signed to receive the "laterallymovable dogs orjaws'Q- As shown,t hese dogs a're provided 'withinwardlyextended portions 10 that move through" the reduced portions; 8 ofthecut out portions 7 the portions 10 being formed with recesses 11intheirupper and lower sur- "faces to accommodate thereduc'ed ends' l2ofthe'screws 13-. These screws 13 passthrough threaded openings in thebody portion and act toflhold the dogs against dis 'wit-h respect tothe'body portion 1 Y Due to the construction of'the cut outper- *tions 7shoulders 14 are provided against which'the dogsmove when the dcgs arein their retracted positions to the endfthat the tool may be droppedinto thewellcasin'gmo. be removed. Adjacent to the cutout porftions 7and communicating --therewi,th, are bores 15 disposedon opposite'sidesofthereduced portions 8 and are designedto accom modate the coiled springslo which have their-inner ends-engaging the'bases of the bores, While.the outer ends thereoffengage the dogs associated therewith, the springsbeing of the expan'sible type to normally urge thedogelaterally; 1 l l-Teeth indicated at 171 are formed onthe dogs and are inclined-towardsone ofthe 'edgestl1ereof,but owing-to the factthat the bodyp'ortioirisprovided with out out-.p'orplacement tions in its' foursides, itowill befseen that these dogs may be removedand reversed andpositioned" incut out portions'at the opposite I sides of :the bodyportion 'to the end that the tool maybe used: in ia'reverse direct-ionI'to unscrewthe'well casing-section if'the sec- "tion's are secured by acoupling having a left hand thread.

- Stops' in dicat'ed by the reference character 18 extend upwardly fromthe upper surface of the body portion and are adapted to cooperate withstops 19 extending laterally from the mandrel 20, to limit the rotarymovement of the mandrel when the tool is beingpositioned for operation.-

The mandrel is formedwith a shoulder 21 formed by the reduced portion 22which is threaded to receive the nut 23 so that the mandrel may bereadily and easily positioned within the body ortion, or removedtherefrom. Thus it W111 be seen thatthe contact of the shoulder 21withthe' flange 6 provides a support for the mandrel and permits themandrel to rotate within the body portion.

As clearly shown by Figure 3 of the drawa ing the mandrel is providedwith a section 24: substantially oval in cross section provid ing a camto engage the inner ends of the inwardly extended portions 10 of thedogs to force the dogs outwardly into engagement with'the well casingsection to be removed. At the upper end of the mandrel is athreaded bore25 having threads of the right hand type, which threads cooperate withthe threads26oi the rod 27 so that the tool may i r be turned to theright while in'operation,

but should it be desired to turn the tool to theileft, or in ananti-clockwise direction a rod having an internal threaded extremity Imay be positioned over the threads 28 which are of'the left hand type,forunscrewing sections of a well casing held together by a couplinghaving lefthand threads.

In the use of the tool, the tool is forced i intogvthewell oasingto beremoved, and the mandrel is rotated to force the dogs laterally ntoclose engagement w th the inner surface of the well caslng, whereupon "afurther rotary movement of the wrench will act to V unscrew the sectionof the casing where it maybe lifted from the well. I a

I claim: J

A tool for removing well casing sections, comprising a body portionhaving a central circular opening and having lateral openingscommunicating with'the central opening, gripping jaws, extensions on thejaws and fitted in the lateral openings, means for.

normally moving the'jawsflaterally, a mandrel extended through thejcentral opening,

said mandrel being oval in cross section andada ated to engage theextens ons ofthe aws 1 to iorce the jaws laterally, stops extendingupwardly from the upper surface of the bodyportion, atopposite sides ofthe cen-" tral opening, stops extending laterally from the mandrelandadapted to engage the. first mentioned stops to restrictmovementofthe mandrel, an'd meansforlimiting outward movement of the jaws. V r

7 In testimony that I claim the foregoing as m own Ihave hereto aifixedm si naa I a:

ture. V j V v i 1 ARTHUR P. ORTOLON.

